Message: Arg_KeyNotFound at Telerik.Data.Core.Layouts.StaggeredRenderInfo.PhysicalOffsetFromSlot(Int32 slot) at Telerik.Data.Core.Layouts.StaggeredLayout.PhysicalOffsetFromSlot(Int32 slot) at Telerik.UI.Xaml.Controls.Data.ListViewModel.ScrollIndexIntoView(UI.Xaml.Controls.Primitives.ScrollIntoViewOperation<System.Nullable<Telerik.Data.Core.Layouts.ItemInfo>> operation) at Telerik.UI.Xaml.Controls.Data.ListViewModel.<>c__DisplayClass55_0.<ScrollIndexIntoViewCore>b__0() at System.Action.Invoke() at Telerik.UI.Xaml.Controls.Primitives.DelegateUpdate<Telerik.UI.Xaml.Controls.Grid.UpdateFlags>.Process() at Telerik.UI.Xaml.Controls.Primitives.UpdateServiceBase<Telerik.UI.Xaml.Controls.Data.ListView.UpdateFlags>.ProcessUpdatesQueue() at Telerik.UI.Xaml.Controls.Primitives.UpdateServiceBase<Telerik.UI.Xaml.Controls.Data.ListView.UpdateFlags>.DispatchUpdates() at Telerik.UI.Xaml.Controls.Primitives.UpdateServiceBase<Telerik.UI.Xaml.Controls.Data.ListView.UpdateFlags>.OnUpdateCallback()

System.Runtime.InteropServices.COMException is thrown when navigating through the child items of the RadialMenuItem. It is easily reproducible when clicking fast to go to the most inner child items of a RadialMenuItem.